John tesseyman



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Letters Patent No, 63,673, elated April 9, i867.

IMPROVEMENT IN PLANING MACHINES.

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TO WHOM IT MAY OONCERN:

Be it known that I, JOHN TESSEYMAN, of Dayton, Montgomery county, Dixie, have invented a new and useful Adjustable Planing-Head; and I hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specification.

My improvement is especially designed for what are known as rotating disk planers, in which the path oi' the Cutting edge is coincident with a plane, or the periphery of a very obtuse cone, parallel or tangential to the surface of the board or plank to be dressed; and my invention consists in a construction of tool or hit-holder, which enables one or more cutters 'to be set out from or in towards the axis of rotation, and yet preserve the most effective angle of presentation in respect to the wood, so as to have inlevery position a paring,` or shaving,r rather than an excavating or tearing eut.

Figure l is a perspective view of a planing head embodying my invention, the hit-holder on one side being detached.

Figure 2 is a side elevation of said head.

Figure 3 is an axial section through my adjustable hit-holder- A is the shaft, and B the T-head of a disk'planer, each arm, of which has a cylindrical termination, C C', to receive and hold the tool-holder, which holder being precisely similar in each, the same description and letters will apply to both. The cylindrical termination is traversed at right angles to the shaft A by the sere`- threaded shank or bolt D, having a nut, E, and a flat head, F, slottedf, to receive `the hit G. II is a washer,

traversed axially by an oricc tting and adapted to receive the head F. The face or advancing end h of the washer is grooved, I, to receive the rear inner edge of the bit,v and sloped ohiiquely in the same direction as said groove. The rear end of said washer has radial serrations, J, which f it similar serrations Ii in the head. The innenrear edge of the hit being sunk the most deeply into the sloping face of the washer, and its cutting odge consequently inclining rearward as it approaches the axis of rotation, the bit is made to act with a shaving or paring' rather than a tearing cnt, and when -set out from the axis, as is often required .to be done in order to have a leading cut over the other bit, the shaving angle and action arc still preserved, which they could not be if the sloping face z was immovable on the head, as in the customary planers. The bit is easily set out or in by simplyslacliening the nut E and turning of the washer II, when the nut, being screwed fest. eo-aets with the serrations J Kto retain the holder securely in place.

I claim herein as new, and of my inventionl. The provision in a planing head of obliquely faced washer or tool holder I-I, adjustable about an axis tangential, or nearly so, to the path of the bit, substantially as set forth.

2. A tool holder for'ardisk or eonioai planer, consisting,` of the obliqne-i`acell and serrated washer Hfslotted bolt D Ff, nut E, and serrated head I3, for the purpose set forth. In testimony of which invention I hereunto-set my hand.

JQHN TESSEYMAN.

Witnesses:

GEO. H. KNIGHT, SAMUEL KNIGHT. 

